/**
 * Copyright 2009-2010 rpn4j.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package org.rpn4j.ctx;

import org.rpn4j.core.Function;
import org.rpn4j.core.Variable;

/**
 * 
 * @author hillger.t
 */
public interface Context {

  /**
   * Registers a {@link Variable} with the given name;
   * 
   * @param name The name of the variable.
   * @param variable The variable to register.
   */
  public abstract void register(String name, Variable variable);

  /**
   * Registers a {@link Function} with the given name;
   * 
   * @param name The name of the function.
   * @param function The function to register.
   */
  public abstract void register(String name, Function function);
  
  /**
   * 
   * @param name
   * @return
   */
  public abstract Variable findVariable(String name);

  /**
   * 
   * @param name
   * @return
   */
  public abstract Function findFunction(String name);
  
  /**
   * Return the type of a given registered object inside this context.
   * 
   * @param name The name of the object.
   * @return The type of the object found.
   */
  public Types getType(String name);
}
